Potassium in the structure of X-Ray Structure of the Nucleosome Core Particle At 2.5 A Resolution (pdb 1eqz)

The binding sites of Potassium atom in the structure of X-Ray Structure of the Nucleosome Core Particle At 2.5 A Resolution (pdb code 1eqz). This binding sites where shown with 5.0 Angstroms radius around Potassium atom. The 1eqz structure was solved by B.L.HANSON, J.M.HARP, D.E.TIMM, G.J.BUNICK, with X-Ray Crystallography technique, brief refinement statistics is given in the table below:

Resolution (A)

25.3-2.5

Space group

P212121

a (A)

105.280

b (A)

109.710

c (A)

181.120

alpha (°)

90.00

beta (°)

90.00

gamma (°)

90.00

Rfactor (%)

21.9

Rfree (%)

28.2

Potassium Binding Sites:

Potassium binding site 1 out of 7 in 1eqz

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Mono- and Stereo- picture of 5.0 Angstrom coordination sphere 1 of Potassium in the PDB 1eqz. Coordination sphere was calculated for all residues within 5.0 Angstroms distance from the central Potassium atom, shown by VdW sphereResidues shown as a stick model or VDW spheres: I: Dg97, I: Dg98,

conact list:

Atom

Atom

Distance (A)

K

C8 I:Dg97

3.93

K

C5 I:Dg97

4.64

K

N7 I:Dg97

3.56

K

OP2 I:Dg97

4.74

K

C8 I:Dg98

4.72

K

C6 I:Dg98

3.99

K

C5 I:Dg98

4.11

K

N7 I:Dg98

3.54

K

O6 I:Dg98

3.24

interactive model:

Potassium binding site 2 out of 7 in 1eqz

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Mono- and Stereo- picture of 5.0 Angstrom coordination sphere 2 of Potassium in the PDB 1eqz. Coordination sphere was calculated for all residues within 5.0 Angstroms distance from the central Potassium atom, shown by VdW sphereResidues shown as a stick model or VDW spheres: J: Da255, J: Da256,